Unfolding stepladder



FIG. 1 is a front perspective view of an unfolding stepladder;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an unfolding stepladder, as shown and described. 